Alternate Foundation Systems Flashcards
Material to be used in foundations should always bear a _______ mark.
Certification
What does CSA and 0322 mean in the PWF certification mark?
CSA 0322 PWF-FBT L/B-P/C CCA 2577
CSA - Certifying agency
0322 - CSA standard under which the material is certified.
CSA 0322 PWF-FBT L/B-P/C CCA 2577
What does PWF-FBT mean?
What does L/B-P/C mean?
PWF-FBT intended use of material
L/b-p/c plant licensed for lumber/plywood
CSA 0322 PWF-FBT L/B-P/C CCA 2577
What does CCA mean?
What does 2577 mean?
CCA - preservative used
2577 - first two digits identify the plant
Second tai identify the year the wood was treated
Name two benefits of the PWF foundation?
Walls do not require further framing prior to insulating the basement
A carpenter can frame the entire thing by his lonesome
The basement floor and and main level floors must be installed before backfill in a PWF foundation. T or F
T
To prevent the accumulation of moisture next to footing, the excavation for wood foundations is usually made ____ than is required and the extra material that is removed is replaced with granular material.
Deeper
For wood foundations you would slope the excavation so the gravel will syphon any water into a pump. T or F
T
If a footing has been poured directly on undisturbed soil it must have _____ installed to allow accumulating moisture to travel through the footing to the pump.
Pipe
Weeping tile is recommended for PWF foundations. T or F
F
The most common type of treatment for PWF lumber is?
Copper Chrome Arsenate (CCA)
When studs must be cut to length in a PWF foundation, the cut the should be installed at the ____ of the wall.
Top
Material used for permanent wood foundations must say ____ on the stamp.
PWF
All of the framing material used in permanent wood foundations must be pressure-treated material, if the framing material is below grade or within ____ of grade.
(12”) 1’
Any metal hardware in PWF must be _____ -_______. Hot dip galvanized and stainless steel meet this requirement. Connecting hardware must be ______.
Corrosion-resistant
Galvanized
In PWF foundations all openings must be _____ since the wall opening must carry the vertical loads from the building above. The window must also have a _____.
Doubled
Lintel
____ _____ is used to provide the attachment and lateral support from the top of the PWF wall to the subfloor and to prevent any inside corners of the basement walls from spreading due to soil pressure.
Metal strapping
_____ must be installed for plywood edges, strapping at inside corners and baseboard attachment in PWF foundations.
Blocking